Precautionary Measures for Strolling in Oirase

Precautionary Measures for Strolling

Precautionary Measures
for Strolling

How to Walk along a Trail in Oirase


  • An upstream stroll on the nature trail of Oirase is highly recommended, since it allows walkers to observe the flowing Oirase Stream while walking through a beautiful sun-lit forest. Oirase features a low-angled trail along the stream, enabling visitors a place to walk up and down without noticing a difference in physical effort.


Precautionary measures while strolling


  • As most of the area around the Oirase Stream is a special protection area, picking any natural materials (incl. fallen leaves and branches) is prohibited.
  • Try to stay on the trail to protect surrounding vegetation.
  • The trail sometimes intersects streets. Please watch out for traffic.
  • There have been large numbers of sightings of Asian black bears in recent years (no accidents have been reported).
  • The trail is closed from the end of December to the middle of April or early May, due to snow.
    • ※Stroll with snowshoes at your own risk.
    • ※A national route is practicable as snow on the road is cleared away.
  • Although attempts to predict risks are made by related agencies, such as safety research and regular patrols, please take precautionary measures while strolling on the trail. Beware of falling branches, rocks, trees, landslide, etc. at all times. Be prepared for any contingency.
  • Public restrooms in the Oirase area are provided at the beginning (Yakeyama), the end (Nenokuchi), and three other points (Ouse, Ishigedo resting place, and the downstream-side of Tamadare-no taki (Tamadare Fall).
  • Food and drink can be purchased at Ishigedo resting place. Vending machines are provided at Yakeyama, Ishigedo, and Nenokuchi (the latter will be removed in winter.)
  • Please note that mobile phones may experience lack of service in some areas.

Proper Attire for Strolling


  • Please wear comfortable clothes suitable for getting slightly dirty.
  • It is recommendable that you wear shirts with long sleeves (or arm covers) and long pants to protect your skin from bugs and thorny plants.
  • Please bring rain gear, such as a folding umbrella and rain coat, in case of sudden weather changes.
  • While you may wear sneakers or other comfortable shoes, water-proof trekking shoes are recommended, as it is typically muddy when it rains.
  • Rubber boots can also be used, but are not recommended for walking long distances.
  • Avoid wearing black clothes and perfumes, which attract bees.
  • Wearing a hat is recommended to protect your head from falling branches and bees.


From Spring
to early Summer
(April to June)


The weather is mild and typically comfortable, but bring jacket with you, such as a parka or thin fleece, in case of cooler weather.

(July to August)


Despite the heat and humidity of summer days, it is best to cover your skin as much as possible to avoid dangers like bees and ticks.

(September to


As the temperature begins to fall, cold protection measures such as thick fleeces or down jackets are necessary.

(December to March)


During these months, it is necessary to have sufficient protection from the cold by wearing a hat, gloves, jacket, snow boots (or thick, long rubber boots), and so on.